Door operating and locking mechanism



April 12, 1938. A. SCHNEIDER 2,113,966

DOOR OPERATING AND LOCKING MECHANISM Filed Nov. 13, 1956 2 h sheet 1FIG. I

INVENTOR ANTHONY SCHNEIDER ATTORNEYS FIG. -2

April 12, 1938. A. SCHNEIDER DOOR OPERATING AND LOCKING MECHANISM 2Sheets-Sheet 2 Filed NOV. 13, 1936 Jr E ID.- H? w 1 E M m TlH 9 A Q n WA Y N W 0 4 Hn mwM/ T N A M 3 2 f I [6 .r M n w h m; Z a u 1 1 MPatented Apr. 12, 1938 PATENT OFFICE DOOR OPERATING AND LOOKINGMECHANISM Anthony Schneider, Silverton, Ohio Application November 13,1936, Serial No. 110,719

7 Claims.

This invention relates to control means for a door whereby the door maybe closed and secured, from a remote location, and thereafterautomatically released upon the expiration of a predetermined timeinterval. The invention is thus applicable for use in connection withbanks, jails, etc.

An object of the invention is to provide novel means for actuation,securement, and release of the door, and as will appear, a particularobject is to provide for closure of the controlled doorwaynotwithstanding blocking of the normal closing path of the door.

The exact nature of the invention together with further objects andadvantages thereof will be apparent from the following description takenin connection with the accompanying drawings, in which Figs. 1 and 2 areviews in elevation from the front and rear respectively, of a swingingor hinged type of door in which the invention is embodied, the doorbeing in closed position and parts in Fig. 2 appearing in section toshow details of construction, the latter View showing also thedoor-actuating mechanism; Fig. 3 is a typical horizontal section of thedoor as in the plane of line 3-3, Fig. 2; Figs. 4 and 5 are viewscorresponding with Fig. 3 but showing the door in Fig. 4 in openposition and in Fig. 5 With its parts as where the door is blocked asindicated in broken lines; Fig. 6 is a sectional detail as in the planeof line 6-6,, Figs. 3 and 4; Fig. '7 is a diagrammatic view showing thedoor-controlling circuit; and Fig. 8 is a detail in sectional elevationas in the plane of line 8-8, Fig. 2.

With reference now to the drawings, the door shown is mounted forswinging movement be tween open and closed position to control itsdoor-- way, and comprises two parts la and lb, of which the part la ishinged as at 2 at a side of the doorway. This part la may be of grilletype and is so proportioned with respect to the doorway that in closedposition its free edge will provide a clearance from the correspondingside of the doorway and extending to the bottom of the doorway, ofsubstantial width but insufficient to permit passage of a persontherethrough. The other door part lb: is mounted for normal movementtogether with the first door part as a unit, but is capable underemergency conditions, of move ment independent of the first door part.The second door part which may be solid, is cooperative with the firstdoor part for complete closure of the doorway when in closed position.As here shown the second door part is hingedly mounted upon the firstdoor part as at 3 so that it may have independent swinging motion aboutan axis adjacent the axis 2 as indicated in Fig. 5. To cause the twodoor parts to normally move together, a breakable connection is providedsuch as by one or more shear pins 4 replaceably mounted as indicated inFig. 8.

From the arrangement described it will be apparent that shouldsufficient force be applied to the door part la to close the door,notwithstanding such obstruction to the door part lb as indicated at A,Fig. 5, the pins 4 will be sheared and the doorway effectively barred.

Power means are provided for so closing the door part lw, shearing thepins 4 if necessary. For the purpose the door part la is provided with15 one or more projections 5, three being indicated, and for eachprojection a plunger 6 is mounted in a bracket 1. For each plunger 5 anactuating screw 8 is rotatably mounted in the bracket 1, having threadedrelation with the plunger. Coincident drive of all the screws 8 isprovided as by a chain 9 running over sprockets l0, one for eachplunger. For drive of the screws, a motor ll is provided connected bysuitable gearing l2 to the lowermost screw 8.

It will be apparent that by the arrangement described and commencingwith the door open as in Fig. 4, operation of the motor in the properdirection to extend the plungers 6, will cause the latter to engagetheir projections 5 upon the door with a camming action and will forcethe door to the closed position of Fig. 3, breaking the shear pins 4 ifthe door part lb be obstructed as in Fig. 5. The door being thus closed,it is so secured by the irreversible nature of the drive provided by thescrews: 8, but upon reverse operation of the motor ll to withdraw theplungers 6, the door may be opened in the usual manner.

A control circuit for the motor ll may be provided as indicated in Fig.'7, wherein power is had from the lines L1, L2 and L3. l3 and I4 arethreepole switches, one for each operating direction of the motor ll. l5and H are switches arranged to be thrown by a projection l8 on one ofthe plungers 6 as the latter attains the end of a 45 stroke. Thus whenthe plungers are in the open position as in Fig. 4, the switches l6 andH are positioned as in Fig. 7, as the plungers advance in door-closingdirection the switch l6 automatically closes, and as the plungers attainthe door-closed position of Figs. 3 and 5, the switch H which is adouble-throw switch, is automatically thrown from the position indicatedin Fig. 7 to its opposite position.

I9 is a double-throw relay switch controlling the main switches l3 andI4 through their actuating coils |3a and Ma respectively. 20 is anautomatic timing switch controlled by a cam 2| driven by a timing motor22. 23 is a bell or other signal device arranged to be energized whenthe door is closed by the motor II, and 24 is a switch by whichdoor-closing by the motor II is initiated and which may be locatedremotely from the door.

Operation for power-closing of the door will be as follows, commencingwith the parts positioned as in Figs. 4 and '7.

Instant depression of the switch 24 completes a circuit including thecoil |3a of the switch l3 and starts the motor operating in closingdirection to throw the plungers 6. It also throws the switch l9 to itsopposite position from that shown, which establishes a maintainingcircuit for the coil 3d and starts operation of the signal device 23through a circuit including the switch As the projection I8 leaves theswitch Hi, the latter closes. As the plungers complete theirdoor-closing movement, the projection I8 throws the switch H whichde-energizes the coil |3a opening the switch 3 and stopping the motor Iand at the same time completes a circuit energizing the timing motor 22to drive the cam 2| and de-energize the signal device 23. As the switchI3 opens, the switch l9 returns to its initial position. This cam andits drive is so arranged that after a predetermined desired time, sayten minutes, has elapsed, the cam 2| throws the switch 20, opening thecircuit of the timing motor 22 and stopping this motor, and completingthe circuit for the coil Ma of the reversing switch It of the motor thiscircuit including the switch |6 now closed and the switch 9. Theplungers 6 are thus withdrawn by the motor II, the switch H beingpermitted toreturn to its original position by the projection l8.

As the plungers attain their initial open position the switch i6 isopened by the projection I8, tie-energizing the coil Ma and stopping themotor The cycle of operations is thus completed, the door is. free to bereopened, and upon resetting of the timer cam 2| to return the switch 20to its shown position the parts are preset for initiation of anotherclosing cycle by depression of the switch 24.

Should the door he already closed when the switch 24 is thrown toinitiate the closing cycle, it will be apparent that the power apparatuswill merely secure it against opening during the timed period described.

Obviously when the power closing apparatus is in its usual open positionas in Fig. 5, the door may be opened and closed by hand in the usualmanner and it may be provided with an ordinary key-operated look asindicated in Fig. 1 for its normal securement in closed position.

What I claim is:

1. A door of the class described having two parts arranged for movementbetween open and closed positions to control a doorway, one of saidparts being arranged to provide, in closed position, a clearance from aside of said doorway, of insuflicient amount to permit passage of aperson therethrough, power means associated with said part for moving itto its closed position, the other door part being arranged to becooperative with said first part, to complete the closure of saiddoorway when in closed position, and means in.- terconnecting said doorparts to cause their normal operation together as a unit and includingmeans breakable to permit said power means to close said first part whensaid second part is ob structed.

2. A door of the class described having two parts arranged for swingingmovement between open and closed positions to control a doorway, one ofsaid parts being arranged to provide, in closed position, a clearancebetween its free edge and the corresponding side of said doorway, ofinsufficient amount to permit passage of a person therethrough, powermeans associated with said part for moving it to its closed position,the other door part being arranged for cooperation with said first partto complete the closure of said doorway when in closed position, andmeans interconnecting said door parts to cause their normal operationtogether as a unit, and including means breakable to permit said powermeans to close said first part when said second part is obstructed.

3. A door of the class described having two parts arranged for movementbetween open and closed positions to control a doorway, one of saidparts being of grille type and arranged to provide, in closed position,a clearance from a side of said doorway of insufficient amount to permitpassage of a person therethrough, power means associated with said partfor moving it to its closed position, the other door part being solidand arranged for cooperation with said grille part to complete theclosure of said doorway when in closed position, and meansinterconnecting said door parts to cause their normal operation togetheras a unit and including means breakable to permit closure of said grillepart by said power means upon obstruction to said solid part.

4. A door of the class described having two parts arranged for swingingmovement between open and closed positions to control a doorway, one ofsaid parts being arranged to provide, in closed position, a clearancebetween its swinging edge and the near side of said doorway, ofinsuflicient amount to permit passage of a person therethrough, powermeans associated with said part for closing it, the other door partbeing arranged for cooperation wtih said first part to complete theclosure of said. doorway when in closed position, and meansinterconnecting said door parts to cause their normal operation togetheras a unit and including means breakable to permit said power means toclose said first part when said second part is obstructed and meansproviding swinging motion between said door parts under such emergencycondition.

5. A door of the class described having two parts arranged for swingingmovement between open and closed positions to control a doorway, one ofsaid parts being arranged to provide, in closed position, a clearancebetween its free edge and the corresponding side of said doorway, ofinsufficient amount to permit passage of a person therethrough, powermeans associated with said part for moving it to its closed position,the other door part being arranged for cooperation with said first partto complete the closure of said doorway when in closed position, andmeans interconnecting said door parts to cause their normal operationtogether as a unit, and including means hingedly mounting said seconddoor part upon said first door part, and means securing said second doorpart against movement upon its hinge and breakable to permit said powermeans to close said first door part when said second part is obstructed.

6. A door of the class described having two parts arranged for swingingmovement between open and closed positions to control a doorway, one ofsaid parts being arranged to provide, in

, closed position, a clearance between its free edge and thecorresponding side of said doorway, of insufi'icient amount to permitpassage of a person therethrough, power means associated with said partfor moving it to its closed position, the other door part being arrangedfor cooperation with said first part to complete the closure of saiddoorway When in closed position, and means interconnecting said doorparts to cause their normal operation together as a unit, and includingmeans mounting said second door part upon said first door part formovement relative thereto about an axis adjacent that of said first doorpart and means breakable to permit said power means to close said firstdoor part upon obstruction to said second door part.

7. A door of the class described having two parts arranged for swingingmovement between open and closed positions to control a doorway, one ofsaid parts being of vertically barred type and arranged to provide, inclosed position, a clearance from a side of said doorway of insuflicientamount to permit passage of a person therethrough, the other door partbeing solid and arranged for cooperation wtih said barred part tocomplete the closure of said doorway when in closed position, said soliddoor part being hingedly mounted upon said barred door part adjacent thehinge of the latter, and means connecting said solid door part with abar of said barred part and breakable to permit said power means toclose said barred part upon obstruction to said solid part.

ANTHONY SCHNEIDER.

